Index: head/math/z3/Makefile
===================================================================
--- head/math/z3/Makefile	(revision 505177)
+++ head/math/z3/Makefile	(revision 505178)
@@ -1,46 +1,46 @@
 # $FreeBSD$
 
 PORTNAME=	z3
-DISTVERSIONPREFIX=	${PORTNAME}-
-DISTVERSION=	4.8.4
+DISTVERSIONPREFIX=	Z3-
+DISTVERSION=	4.8.5
 CATEGORIES=	math
 
 MAINTAINER=	arrowd@FreeBSD.org
 COMMENT=	Z3 Theorem Prover
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 USES=		compiler:c++11-lang python:2.7,build
 USE_GITHUB=	yes
 GH_ACCOUNT=	Z3Prover
 
 HAS_CONFIGURE=		yes
 CONFIGURE_ARGS=		--prefix=${PREFIX}
 USE_LDCONFIG=		yes
 
 OPTIONS_DEFINE=		DEBUG STATIC GMP
 
 OPTIONS_DEFAULT=	STATIC
 OPTIONS_SUB=		yes
 
 DEBUG_CONFIGURE_ON=	--debug
 
 STATIC_DESC=		Build static z3 library
 STATIC_CONFIGURE_ON=	--staticlib
 
 GMP_DESC=		Use GMP library for AP arithmetic
 GMP_CONFIGURE_ON=	--gmp
 GMP_USES=		localbase:ldflags
 GMP_LIB_DEPENDS=	libgmp.so:math/gmp
 
 LDFLAGS_i386=		-Wl,-znotext
 BUILD_WRKSRC=		${WRKSRC}/build
 INSTALL_WRKSRC=		${WRKSRC}/build
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/bin/z3
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libz3.so
 	${LN} -s libz3.so ${STAGEDIR}${PREFIX}/lib/libz3.so.0
 
 .include <bsd.port.mk>
Index: head/math/z3/distinfo
===================================================================
--- head/math/z3/distinfo	(revision 505177)
+++ head/math/z3/distinfo	(revision 505178)
@@ -1,3 +1,3 @@
-TIMESTAMP = 1550916438
-SHA256 (Z3Prover-z3-z3-4.8.4_GH0.tar.gz) = 5a18fe616c2a30b56e5b2f5b9f03f405cdf2435711517ff70b076a01396ef601
-SIZE (Z3Prover-z3-z3-4.8.4_GH0.tar.gz) = 4117081
+TIMESTAMP = 1561572798
+SHA256 (Z3Prover-z3-Z3-4.8.5_GH0.tar.gz) = 4e8e232887ddfa643adb6a30dcd3743cb2fa6591735fbd302b49f7028cdc0363
+SIZE (Z3Prover-z3-Z3-4.8.5_GH0.tar.gz) = 4177051